THIN AND EFFICIENT LIGHT GUIDE SYSTEM
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United States of America Patent
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Issued Date -
Sep 17, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 11, 2012
priority date (Note) -
Abandoned
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Abstract
The present invention is based on the idea of providing an illumination system with a light guide (10) reduces the risk of causing non-uniformity in the light emitted by illumination system. With a light-guide (10) that has a curve-shaped top surface such that incident light falls on the top surface (18) at an angle larger than the critical angle of the light-transmissive light guide, the risk of hard boundaries and hot spots appearing may be reduced.
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